In the 1970’s and 1980’s there were several books the either had characters that did it or promoted it.
Why is there no cooking tray in my new car’s engine bay?
Is it dangerous? (It would be less physically dangerous if there was a specific spot for it.)
Those are good points.
I had been thinking of partly cooking on the engine, and finishing in the oven. (Use case is baking something that needs 90 minutes in the oven.) Actually moving hot food is an issue, though one we deal with normally when baking.